Building construction.



W. A. BISHOP. BUILDING UONSTRUOTION. APPLICATION FILED DEC. 11, 1908.

980,479. Patented Jams, 1911.

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wi/meoom UM W W. A. BISHOP.

BUILDING CONSTRUCTION.

APPLIOATION FILED 1320.11, 1908.

980,479. v Patented Jan. 3, 1911.

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UNITED STATES PATENT enema WILLIAM A. BIsHor, or NEWARK, NEW JERSEY, Assrcnon or on'nrzanr 'ro can! TOMKINS OF -NEWARK, NEW JERSEY.

To all whom it may concern:

Be it known that I, WILLIAM ABELL BISHOP, a citizen of the United States of America, and a resident of the city of N ewark, in the county of Essex and State of New Jersey, have invented new and useful Improvements in Building Construction, of which the following is a specification. r

y improvement relates to the construction of hollow blocks, for columns used in the moldin of pillars, which consists of blocks of high class fireproof concrete'provided with a central opening and in which is embeddedmetallic reinforcing pieces, formed in the shape of rings, which blocks when placed one above the-other will provide a hollow column having a clear. smooth opening in which is molded, or cast, an integral concrete supporting pillar for a building, the reinforcing rings becoming exterior rings to the said supporting pillar and the blocks forming the outside finish and fireproof envelop for the pillar. By this means I am enabled to employ certain fixed or standard sizes of hollow blocks which will result in certain standard sizes of supporting pillars.

In order that my invention may be fully understood I will proceed to describe it with reference to the accompanying drawing in which:

Figure l is a perspective view of one of my improved column blocks showing one form of a skeleton reinforcing tube. Fig. 2 is a perspective View showing anotherform of column block and a skeleton reinforcing Fig.3 is a perspective view showing still another form of eolumn'block and a reinforcing tube. Fig. 4: is a vertical section of a series of column blocks placed one upon the other so as to provide a pillar mold and surmounted by a metallic reinforcing tube.

A is the shellof a hollow fireproof cement block, and B are metallic reinforcing rings suitably spaced and embedded in said block. Vertical spacin'gstrips C, each having an out-turned foot piece, and a vertical row of outwardly projecting upturned supporting I ---hook's' struck up therefrom, are provided and serv-e'to space the rings B properly while the hollow block isin formative state. When the rings B have been suitably placed and spaced on the hooks D .of the spacing strips C, the cement is formed around the Specification of Letters ZPatent: Application filed December 11, 1908.

said, are merely shells or:

becomes the support proper of or structure; the shell, or enyelop, merely its outside is concerned,

.up with cement joints,

'Patented Janie; 1911. Serial No. 466,929. i

sameby a suitable mold, not shown, andthe interior finishtis formed flush withthe. interior faces of the spacingstripsG, the rings- B being embedded in the cementshell A. These hollow fireproof cement, blocks' 'are made beforehand and arebrought to the building being constructed already formed and hardene'dand ready for use and it is a part of my invention to devise and'employ a series of sizes relating both to the-exterior dimensions of the blocks, which, as afore envelope, and more particularly to-the interior openin which provides means for the reception 0 the finaland integral. pillar, which pillar the building acting as a temporary-supportror the reins forcing rings, and, after the pillar'is properly embedded and settherein, constitutes-a fire resisting shell. p

In carrying my invention into effect, the exterior shell maybe of any shape sofar as be square, octagonal, round or in any other shape that may be desired which may tend.

to increase its usefulness, of operatetoqlend artistic finish to the whole; but itis to be understood that the pillar is the interior inthatis to say, it'm-ay' tegrally formed piecewith the-metallic reinforcing rings. In Fig. 4; I show several of these hollow blockssupported one above the other so as to form a. column for molding a pillar.

The column blocks are made of dense rich fire resisting concrete and the reinforcp .themwhen made, the.

ing rings are cast in rings being suitably spaced by means ofthe metal spacing strips C, carryingthe hooks D. The rings being endless give the used. I have shown them circular in form but they may be of any cross section, round, square,flat or twisted.

eatest tensile strength for the weight 0 metal;

The blocks when erected into -a column form a clear smooth openform'to receive the concrete, making it easy .to thoroughly ramor tamp the concrete in place and avoid-' ing all chances of the concrete not filling'the' entire column solid. Thebloclis maybe laid or allowance may be made for shrinkage in the column by laying after the entire concrete mass has set and them up loosely and pointing up the joints Znent and all chance of imperfect covering is exterior finish within the range of concrete shrunk. They may be made absorbent or non-absorbent as desired to suit the mixture which. is to be placed within them. They may be made on the jobor in the factory and carried in stock for quick work. They may be made in any mixture desired and of any construction.

v The column blocks are adapted to form a perfect protection for the steel reinforceliminated. They may be subjected to heavy pressure during process of manufacture if desired." v

difficulty of getting concrete mixtures to'flow perfectly'around column reinforce- Iment when such concrete is placed in'wooden forms-and the difficulty of efficiently tamping'the same is well known and it is of common occurrence in reinforced concrete construction that when the wooden forms are removed it is'found that the concrete has not entirely covered the reinforcement nor filled the form. 'It is then necessary to plaster'up these holes and deficiencies when finishing the columns. My reinforced concrete block columns avoid all this and present a finished surface when erected.

With the block method,the architect, en- 'eer and .owner are certain-that the reinorcement .lS inits proper place, that it is accurately spaced and thoroughly protected,

as blocks may be inspected and imperfections notedand rejected before being laid in the columns. W1th the wood form method this cannot be done as after the forms are re-v outer shell is burned off, crushed or otherwise removed is well known. When this occurs with the spiral wound reinforcement *it is obvious that the column reinforcement I is'u'seless. With this block type the entire outer fireproofing shell may be removed byany method and thefcolumn would still be a banded concrete illar with its bearing capacity as origina ly figured unimpaired; in

. fact in addition to the advantages of construction there is almost no chance for this type.o'f column to fail due to exterior damage and its crushing strength-is far beyond that of columns. constructed in any other -manner.

Where great compressive strength is required and the space limited the metal spacers holding the reinforcement rin s may be made of a continuous tube C aving struck upv hooks D to carry the rings-or ban d B as shown in Fig. 3.

The block columns may be used in con vjunction with steel girders, etc., by settin the column clamps and resting the ends 0 the girders therein and casting the ends of girders into the column.

The columns areno larger in section than any. otherform of reinforced concrete construction of the same or less bearing capacity.

There is no limit to'the height of floors or s acing of columns within, the range of rein orced concrete'constructions.

Fig. 2 shows a metallic reinforcing tube which is of skeleton form. The spacin strips in this instance have their outturne foot pieces formed with right angle extensions providing anchors which are inserted in the pillar-opening on the uppermost column block.

Having thus described my invention the following is what I claim as new therein and desire to secure by Letters Patent:

1. A hollow column block comprising a concrete shell and a reinforcing tube having rows of outwardly projectlng spacing hooks and a series of rin s supported on the spacing hooks; the tube%aeing embedded in the concrete shell flush with the inner surface thereof so as to provide a clear smooth opening in the concrete shell.

2. A hollow column block comprising a concrete shell and a tube having rows of outwardly projectinguspacing hooks struck up therefrom and a series of rings supported on the spacing hooks; the tube being embedded in the concrete shell flush with the inner surface thereof so as to provide a clear smooth opening in the concrete shell.

3. A hollow colu mn block comprising a concrete shell and a tube consisting of strips, each having a row of outwardl projecting spacing hooks and a series 0 rings supported on the spacing hooks; the tube being embedded in the concrete shell flush with the inner surface thereof so as to provide a cl'ear' a series of rings supported on the spacing hooks; the tube being embedded in the concrete shell flush W1th the. inner surface thereof so as to provide a clear smooth open- ]ing in the concrete shell.

WILLIAM A. BISHOP.

Witnesses:

, HERBERT KNIGHT,

JOHN J'oHNsoN. 

